Caltrans district 7 includes every freeway in Los Angeles and is perhaps the most notorious road system in the country.
The optimum speed to move traffic through a network is supposed to occur at 45 miles per hour. In Los Angeles, however, it's 60 miles per hour. This means that the "Highway Capacity Manual--the bible of all California freeway engineers--'is pure formula, wrong, based on no empirical formula.' Or maybe we're just beginning to understand how our freeways work, just starting to take the first steps toward a unified field theory of congestion." Think understanding traffic is simple? This fascinating Los Angeles Magazine article explains the art and science of transportation studies.
Thanks to Chris Steins
FULL STORY: Hard Drive

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Vehicle-related Deaths Drop 29% in Richmond, VA
The seventh year of the city's Vision Zero strategy also cut the number of people killed in alcohol-related crashes by half.

As Trump Phases Out FEMA, Is It Time to Flee the Floodplains?
With less federal funding available for disaster relief efforts, the need to relocate at-risk communities is more urgent than ever.

A Case for Universal Rental Assistance
A pair of researchers argues that expanding rental assistance programs for low-income households is the most effective way to alleviate the housing crisis.

Office Conversions Have Increased Every Year This Decade
Since the pandemic, office vacancy rates remain high, leading many cities to adjust zoning codes to accommodate adaptive reuse.

Index Measures Impact of Heat on Pedestrian Activity
When heat and humidity are high, people are more likely to opt for cars when possible.
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